Full description
The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.This radiometric uranium grid has a cell size of 0.00052 degrees (approximately 53m) and shows uranium element concentration of the Cootamundra, NSW, 1997/98 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1997 by the NSW Government, and consisted of 69086 line-kilometres of data at 250m line spacing and 80m terrain clearance.
Lineage
Maintenance and Update Frequency: notPlanned
Statement: This Cootamundra ppm uranium grid geodetic is an airborne-derived radiometric uranium grid for the Cootamundra, NSW, 1997/98. The survey was acquired under the project No. 681 for the geological survey of NSW. The grid has a cell size of 0.00052 degrees (approximately 53m). A total of 69086 line-kilometres of data at a line spacing of 250m and 80m terrain clearance were acquired to produce this grid. This radiometric uranium grid shows uranium element concentration of the Cootamundra, NSW, 1997/98 in units of parts per million (or ppm). Noise-adjusted singular value decomposition (NASVD) has been applied to the data. NASVD is a spectral component analysis procedure for the removal of noise from gamma-ray spectra. Details of the specifications of individual airborne surveys can be found in the Fourteenth Edition of the Index of Airborne Geophysical Surveys (Percival, 2014). This Index is also available online at http://pid.geoscience.gov.au/dataset/79134.
Reference:
Percival, P.J., 2014. Index of airborne geophysical surveys (Fourteenth Edition).
Created: 07 03 2020
Issued: 07 03 2020
Modified: 06 07 2021
Data time period: 15 11 1997 to 20 03 1998
text: westlimit=146.9871; southlimit=-35.0044; eastlimit=148.5127; northlimit=-33.9951; projection=WGS84 (EPSG:4326)
Subjects
Australia |
EARTH SCIENCES |
Earth sciences |
GADDS2.0 |
NASVD |
NCI |
NSW |
Published_External |
U |
airborne digital data |
gamma-ray |
geophysical survey |
geophysics |
geoscientificInformation |
grid |
rad |
radiometrics |
raster |
spectrometry |
survey 681 |
uranium |
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Other Information
The Geophysical Archive Data Delivery System (GADDS2) portal provides HTTP download of geophysics datasets in a number of formats. Point and line datasets are available in NetCDF and ASEG-GDF2. Grid datasets are available in NetCDF, GeoTIFF and ERS. (File available for download in various formats from the GADDS2 portal)
url :
https://portal.ga.gov.au/persona/gadds
File download for Cootamundra ppm uranium grid geodetic (Cootamundra ppm uranium grid geodetic file download)
NetCDF Subsetting Service (NCSS) for Cootamundra ppm uranium grid geodetic (Cootamundra ppm uranium grid geodetic NCSS)
OPeNDAP web service for Cootamundra ppm uranium grid geodetic (Cootamundra ppm uranium grid geodetic OPeNDAP)
OGC Web Mapping Service (WMS) for Cootamundra ppm uranium grid geodetic (Cootamundra ppm uranium grid geodetic WMS)
OGC Web Coverage Service (WCS) for Cootamundra ppm uranium grid geodetic (Cootamundra ppm uranium grid geodetic WCS)
Cootamundra ppm uranium grid geodetic NCSS
Cootamundra ppm uranium grid geodetic OPeNDAP
Cootamundra ppm uranium grid geodetic WMS
Cootamundra ppm uranium grid geodetic WCS
Identifiers
- URL : pid.geoscience.gov.au/dataset/ga/141476
- global : a6ebe002-5661-45cf-8862-0035cbca45ed
